Bronzing and dusting attachment for printing and lithographing machines.



C. SOUTTER.

BRONZING AND D USTING ATTACHMENT FOR PRINTING AND LlTHOGRAPHING MACHINES. APPLICATION FILED JULY 18 1913.

Patented Aug. 10, 1915.

2 SHEETS-SHEET 1- l I f CHARLES SOUTTER 37 :4 IS HTTY.

C. SOUTTER. BRONZING AND DUSTING ATTACHMENT FOR PRINTING AND .LITHOGRAPHING MACHINES.

APPLICATION FILED .IULY I8, I9I3. LlQQAli Patented Aug. 10, 1915.

2 SHEETS-SHEET 2.

INVENTO R:

CHARLES SOUTTER' pnrrnn s'rArEs PATENT OFFICE.

CHARLES SOUTTER, OF BRUNSWICK, VICTORIA, AUSTRALIA.

BRONZING AND DUSTING ATTACHMENT FOR PRINTING 'AND LITHOGRA BHING MACHINES.

Specification of Letters Patent.

Patented Aug. 10, 1915.

Application filed July 18, 1913. Serial No. 779,673.

To all whom it may concern:

Be it known that I, CHARLES SOUTTER, of 58 Fraser street, Brunswick, in the State of Victoria, Commonwealth of 'Australia, machinist, have invented certain new and useful Improvements in Bronzing and Dusting Attachments for Printing and Lithographing Mach'nes, of which the following is a specification.

This invention relates to an improved bronzing and dusting attachment for cylinder printing and lithographing machines and has for its object the provision of exceedingly simple and easily controlled mechanism whereby printing in gold and bronze can be expeditiously performed and without allowing the gold or bronze dust to get into the atmosphere in sufficient quantities to injure the health of the operators.

Hitherto it has been the custom to do the printing on the ordinary printing or lithographing machine and then while the printing is still damp to take the sheets of paper to a special room in which is placed the bronzing machine. The object in keeping a separate room for bronzing and dusting is to prevent as far as possible the escape of the dust laden air to the atmosphere breathed by the other workmen.

The disadvantages of the ordinary method of bronzing and dusting are the necessity of employment of two separate and detached machines, therefore requiring separate operators for each, and labor and time for transferring the printed matter from one machine to the other. Moreover, owing to the bronz ing and dusting being done in a confined space the operators inhale a considerable amount of the dust and frequently it is found necessary to work very short hours to enable the operators to guard against the injurious effect of the dust laden air.

Now the object of the present invention is to obviate the abovementioned disadvantages by attaching a simpleand easilycontrolled bronzing and dusting apparatus to the ordinary cylinder printing and lithographing machines in such a way that the paper is printed, bronzed and dusted in one continuous operation, the bronzing and dust ing being performed at a uniform rate to the prlnting.

' The said apparatus does not require a separate attendant and it is so constructed and operated that only a minimum quantity of dust escapes to the atmosphere.

The invention broadly consists in mountmg a casing containing the bronzing and dusting apparatus over the-feed end of a printing machine and in operating the said apparatus from a rotary shaft on the said machine. The inner end of the casing sup ports a cylinder having peripherally disposed grippers which take the paper from the flier drum, carry it around past the bronzing rollers thence through a series of dusting rollers to the fliers or to a receiving table.

In order that the invention. may be more readily understood reference will now be had to the accompanying sheets of explanatory drawings wherein Figure 1 is a view in side elevation of the improved bronzing and dusting attachment. Fig. 2 is a view in sectional elevation of Fig. 1. Fig. 3 is a View in plan of part of the apparatus taken on the dotted line II of Fig. 2. Figs. 4 to 13 are views of constructional details hereinafter fully described.

Throughout the drawings similar characters of reference have been employed to indicate like parts in the different views and the numeral 1 designates the casing which is supported in position by brackets 2 bolted to the frame 3 part only being shown) of the printing machine or by other approved means.

The inner end of the casing 1 surrounds a bronzing cylinder 4 the journals of which are mounted in suitable bearings fitted to the sides of the said casing. A spur wheel 5 is carried on one of the journals of, the bronzing cylinder and meshes with a pinion 6 fitted to a shaft 7 mounted transversely in the casing thereabove. Motion is im-' parted to the bronzing cylinder 4 by chain and sorocket *earin r--6 .or; b. an other provided with a longitudinal. recess.8 in which is mountedza rocking shaft9 having a seriesof grippers 1 0 fitted thereto. The

said grippers 10 are arranged to open and close to receive a sheet of paper from a fiier drum 11 situated above a printing cylinder 12. Both the drum and cylinder are shown diagrammatically in the drawings.

The grippers 10 are opened by means of a cam wheel 13 and lever 14 and are closed by a spring 15 of preferred design. The cam wheel 18 is provided with teeth on its periphery which mesh with the teeth of a pinion 16 one half its diameter fitted concentrically to the end of the bronzing cylinder. The said pinion 16 preferably is one quarter the diameter of the cylinder and the cam wheel is mounted revolubly on a stud 17 fitted to the side of the casing 1 or to a bracket affixed to the same.

The lever 14 is fitted to the end of the rocking shaft 9 and is of bell-crank form having one arm longer than the other., The arms of the lever 14 project tangentially inward and are provided with laterally projecting studs 18 on their outer ends, said studs preferably being furnished with antifrictional rollers of approved form. The forward arm of the lever 14 is shorter than the rear arm and when the grippers 10 are in position to take the sheet from the flier drum they are opened by the stud on the shorter arm coming into contact with a cam or projection 19 on the cam wheel.

The cam wheel is rotated in an opposite direction to the bronzing cylinder and directly the stud on the short arm of the lever 14 moves away from the cam 19 the grippers are forced by the spring 15 to close on the edge of the sheet released from the fiyer drum.

The bronzing cylinder has a continuous movement and when the attachment is applied to a printing machine the sheet is taken over the top of the said cylinder and down past bronzing rollers located in the bottom of the casing. The sheet is then carried around until its forward edge is brought to the top of the cylinder where it is released by the stud 18 on the long arm of the lever 14 coming into contact With a cam 21 on the cam wheel 13.

The lever 14 is forced upwardly when it abuts against the cam 21 and the grippers 10 open to permit a second set of grippers 22 carried on endless chains 23 to grip the forward edge of the sheet of paper. The endless chains 23 are carried on sprockets 24 fitted to the transverse shaft 7 and to the ends of a cylinder 25 located transversely in the opposite end of the casing.

The grippers 22 are fitted to a. cross rod 26 carried by the chains 23 and the said grippers normally are forced to bear upon a similar rod 27 located at the rear thereof by aspring 27 arranged as shown or in any other approved way. The paper released from the bronzing cylinder is gripped between the grippers 22 and the rod 27 and is carried toward the rear of the casing 1 through a series of oppositely revolving cylindrical brushes 28 having their journaled ends mounted in bearings 29 fitted adjust ably by means of bolts or set screws 2!) to the sides of the casing as shown in Fig. 7 of the drawings.

The brushes 28 are arranged in pairs as shown and the chains 23 pass and carry the sheet between each pair of said brushes to and around the cylinder 25 and then back through a second series of revolving brushes 30 situated in the top of the casing. The brushes 2S and 30 with the exception of the last pair in the top series are arranged to move in an opposite direction to that taken by the paper in order to effectually disperse the bronze or gold dust and remove any unnecessary quantity of the same from the paper. The said brushes are formed of any suitable material covering a wood or other base.

The cylinder 25 keeps the sheet of paper perfectly flat when passing from the lower to the upper series of brushes. The last pair of brushes 30 of the upper series revolve in the direction taken by the paper and assists in feeding it on to endless tapes 31 which direct it to the fiyers (not shown). when the said paper is released from the grippers. The said tapes 31 are mounted on revolving rollers or reels 32 of approved form which can be operated in any convenient way.

The end of the rod 26 carrying the grippers 22 is formed With a depending arm to which is fitted a laterally projecting stud 34 preferably carrying an antifrictional roller of approved form. \Vhen the grippers 22 have moved over the top of the sprockets 24 the stud 34 on the arm 33 comes into contact with the upper end of a camshaped projection 35 fitted to the sides of the casing 1 and this projection causes the rod to be partially rotated to turn the grippers outwardly or a little more than at right angles from the chains. The cam-shaped projection 35 can be fitted adjustably to the side of the casing to permit of it being set at any desired angle. The said grippers are forced to close by the spring 27 when the stud 34 passes off the cam-shaped projection 35 and this spring may encircle the gripper rod and have one end fitted to the arm 33 1 and the opposite end arranged to bear on the rod 27 as shown in Fig. 4 of-the drawings.

Simultaneously with the opening of the grippers 22 a fork 36 situated above the shaft 7 is set in motion and moves forwardly to direct the forward edge-of the paper over the top of the tapes 31. The said fork is re ciprocated by a lever 37the upper end of which has a slot and pin connection 38 with lli a lug depending from the side of the sa d forkand by a cam 39 formed on or fitted tio th e journal or end of the bronzing cylin- *The lever 37 is pivotally mounted on a stud 40 fitted to the side of the casing and its lower end is kept bearing against the cam of paper from the said cylinder in the manner before described and after it has passed over the bronzing rollers. Y

If preferred, a lever 37 can be provided at each end of the fork 36 and a cam 39 of each end of the cylinder 4 to insure the said levers operating the fork evenly and uniformly at both ends and it can be mounted in approved forms of guides as 36 The chains 23 and circumference of the bronzing cylinder may be of equal length but the said chains preferably are double the length of the circumference of the cylinder. The chains can be of greater length and fitted with two sets of grippers 22 that are timed to take the sheets from the cylinder and deliver them to the tapes 31 at a uniform rate with the printing operations.

A grooved pulley 42 is fitted to one end of the shaft 7 and a similar pulley 42 is fitted to a projecting end of one of the journals of the cylinder 25 and smaller grooved pulleys 43 are fitted to the pro ecting ournals on the corresponding ends of the re-' of the drawings While an idle pulley 45 can be mounted adjustably in a suitable position to permit of the tension of the cord or belt 44 being regulated as required.

If preferred, the end of the journal of the bronzing cylinder fitted with the driving sprocket 6 can be extended and mounted in a bearing 46' (part only-of which is shown) of approved form to insure the said cylinder remaining perfectly horizontal when in operation.

The casing 1 can be detachably and adjustably fitted to the frame of the machine in any other preferred way and not necessarily as hereinbefore described and as shown in the drawings.,

' The bronzingrollers comprise a slowly revolving or. intermittently operated feed roller 47 a distributing roller 48 and two or more revolving brushes 49 which latter are arranged to brush against the surface of the paper lying on theperiphery of the cylinder 4.

The feed roller 47 is provided with longispectively operate.

tudinally disposed grooves 50 (see Figs. 3 and 12) and operated in a transversely disposed chute or trough 51 fitted to the casing. The said grooves 50 may extend part of or the full length of the roller 47 and they can be arranged parallel with the axis or helically on the periphery thereof. In a modified form of feed roller the grooves 50 can be substituted by circular or other shaped recesses. The said chute or trough 51 is designed to hold the bronzing or gold dust and as the feed roller 47 is revolved the grooves 50 or recesses therein take up a small quantity of the dust and delivers it on to the surface of the distributing roller 48 which directs it upon the brushes 49. The said brushes 49 apply the dust evenly onthe printed surface of the paper and the superfluous dust is afterward removed by the brushes 28 and 30' as hereinbefore described. The dust can be placed in a hopper 52 fitted to the side of the casing 1 from which it can gravitate into the end of the trough 51 along which it is evenly distributed by an Archimedean screw 53 or the like operated in any preferred way. An intermittent motion can be imparted to the feed roller 47 by ailixing avariable throw disk-crank 54 to the projecting end of one of the journals of the bronzing cylinder 4- and connecting said disk by a link to a pivoted arm 56 having a pawl 57 arranged to engage aratchet 58 fitted to the end of a journal of the said roller. By adjusting I the throw of the disk-crank 54 the roller can be operated slower in quicker as desired-see Figs. 3 and 13.

The distributing roller 48 and brushes 49 can be operated from a pulley 59 or the like fitted to the shaft 7 by a belt (50, a pulley 61 on the end of a journal of the distributing roller and gear wheels 62 fitted to the opposite journals of the-roller and brushes as shown in Figs. 1 and 13 of the drawings.

The casing 1 can be provided with a horizontal partition 63 practically dividing the casing into an upper and lower compartment in which the brushes 30 and 28 re- The said partition effectually prevents the dust removed from the paper by the top series of brushes 30 falling on to the lower series of brushes 28 and the said partition can be formed in two or more separate parts and inclined so as to direct superfluous dust back to the hopper 52.

It is not essential that the arms of the lever 14 should vary in length as by raising the stud 17 carrying the cam wheel 13 (as shown in Figs. 8 and 9) the arms may be made of equal length to cause the grippers 10 to open and close at their proper times.

In Fig. 8 the bronzing cylinder 4 and the fiyer drum 11 are represented by dotted circles and serve to indicate the positions of the lever 14, cam wheel 13 and sprocket wheel 24, respectively therewith. In the last mentioned'figure the lever 14 is shown in the position it occupies preparatory to its -op eration for opening the grippers 10 to take a sheet of paper from the flyer drum and in dotted lines in the position occupied prior to opening to release the sheet.

Figs. 10 and 11 of the drawings illustrat an alternate means of opening the grippers 10 to receive and release the sheet of paper as required. Fig. 11 represents part of the machine in sectional elevation and Fig. 10 is a view in sectional side elevation taken on the dotted line IIII of Fig. 11 and viewed in the direction of the arrow. In the construction illustrated as above set out the rod 9 is provided on one end with a lever 64 having long and short arms 65 and 66, respectively. A spring 67 .of approved design is employed to retain a constant pressure on the long arm of the lever in order to keep the grippers closed normally. The pinion 6 or theshaft 7 is fitted with two arms 68 and 69 of different lengths which are furnished with laterally projecting studs 70 adapted to contactvwith the ends of the lever 64 at predetermined times when the machine is in operation.

In Fig. 10 the bronzing cylinder is shown I in position where the grippers must be opening to take the sheet/from the flyer drum-part ofwhich is indicated by a dotted line. The said grippers are caused to open by the stud 70 on the long arm68bearing on and depressing the long arm 65 of the lever 64 when ,the apparatus is in motion. The said stud 70 is arranged to bear upon the arm 65 until the bronzing cylinder 4 .is in a position for the grippers 10 to close on the sheet when the stud will'owing to'its great-er rapidity of movement-pass from and permit the lever to be returned to its.

normal position by the spring 67.

When the sheet has been taken around past the bronzing rollers or brushes and its forward edge is above the cylinder 4 the stud 70 on the shortv arm comes into contact with the short arm 66 of the lever 64 action of the and forces it forwardly to open the grippers grippers 10 it is caught by the grippers 22" a on the chains 23 and conveyed through the dusting rollers 28 and 30fas' before described.

' ,4 and the arms 68 and 69 and lever 64" are "which the same relates.

The bronzing apparatus In Figs. 10 and 11 the" sprockets 24 are shown half the size of the bronzing cylinder gearing employed to operate the sprocket shaft 7 may also be modified to actuate the chains 23 carrying the grippers 22 at a suitable rate to take the printed sheets from the bronzing drum. The lever 14 or the lever 64 whichever is most suitable can be employed to open the grippers 10 in the modification above described.

In attaching the invention to lithographing machines the lower set of brushes 28 can be dispensed with and the printed and bronzed sheet can be taken from the top of the bronzing cylinder (which together with the sprockets 24 are revolved in an opposite direction'to that before described) and j then passed through the brushes 30 around the cylinder 25 and delivered to a table or receiving board located beneath the casing. It will be understood that the brushes 30 in this case revolve in an opposite direction to that taken by the sheet and the fork 36 and means for operating it can be dispensed with. The manner of arranging the different parts of the invention to suit the requirements .of lithographing machines and different types of printing machines will be read ly understood from the foregoing description'by a person skilled in the art to I hereinbefore described with slight modifications can be employed independently of a printing machine for bronzing printed sheets of paper and the like and such modifications can be readily effected by any engineer having a knowledge of pr nting machinery.

While I have described in 'the foregoing specification the construction of parts and operations preferredI am aware that various modifications may be made in the apparatus without departing from the spirit and scope of the invention, and I, therefore,

do not wish to be understood as limiting myself by the exact terms employed inthe description, excepting such as the state of the artmay require.

What I do claim is 1. In a bronzing and dusting apparatus cylinder to grip a sheet of paper, rollers I the combination of a cylinder, means on said and endless conveyer, means for releasing the paper from the cylinder after a complete revolution and delivering it to the conveyer, means on the conveyer to grip said delivered sheet, a series of pairs of rotary brushes between which the sheet 'on the conveyer is carried, and means to release the paper gripping means on the conveyer and discharge the sheet, substantially as and for sides of said conveyer.

3. In a bronzing and dusting attachment for printing and lithographing machines, a casing located above'the flyer drum or printing cylinder, a bronzing cylinder in one end of said casing and operating adjacent to the flyer drum or printing cylinder, grippers onsaid bronzing cylinder, a lever and cams for opening and a spring for closing said grippers,- bronzing rollers and brushes located near the bottom of the bronzing cylinder, an endless conveyer comprising chains, grippers and sprockets for taking a bronzed sheet of -paper from the bronzing cylinder, and revolving dusting brushes located on each side of the said conveyer, substantially as describedf 4. In ,a bronzing and dusting apparatus attachable to printing and lithographing machines the "combination of a casing, a

bronzing cylinder, bronzing rollers and.

brushes, grippers onsaid bronzing cylinder, endless chalns operating on sprockets above said bronzing cylinder, .oppositely revolv ing brushes located on each side of said chains and actuated by pulleys and belt, and grippers on said chains all arranged and operating, substantially as described and illustrated and for the purposes setiforth.

6. In a bronzing and dusting apparatus attachable to printing and lithographing machines, a casing having a bronzing cylinder, rollers and brushes at one end, grippers on said cylinder, sprockets fitted to a shaft located above the cylinder and sprockets situated in. the'opposite end of said casing, endless chains passing around said sprockets, spring actuated gripping mem bers fitted to a rod carried by said chains, said grippers bearing on an adjacent and similarly disposed 'rod, an arm on one end of the gripper carrying rod, and a, fixed cam-shaped plate or projection disposed in the path of the said arm, substantially as described.

6. In a bronzing and dusting apparatu attachable to printing and lithographing machines the combination of a casing, a bronzing cylinder located transversely H1 one end ofsaid casing, a bronze containing means for keping the bronze at an even depth throughout the length of the trough or hopper, a feed roller having a recessed periphery and operated intermittently in said trough or hopper, a continuously revolving distributing roller disposed parallelly with and adjacent to said feed roller, and revolving brushes bearing against the periphery of said cylinder, substantially as described and illustrated and for the pur-' poses set forth. a

7. In a bronzing and dusting apparatus for printing and lithographing machines, the combination of a bronze containing trough or hopper and a feed roller having a grooved or recessed periphery operating intermittently in said trough, substantially as described and for the purposes set forth.

8. In a bronzing and dusting apparatus for printing and lithographing machines,

.trough or hopper adjacent to said cylnder,

the combination of a bronze containing trough or hopper, a feed roller having a grooved or recessed periphery operating intermittently in said trough, and a screwopcrating in said trough for evenly distributing the bronze dust, substantially as described and for the purposes set forth.

9. In a bronzing anddusting attachment for printing .and lithographing machines,

ing a longitudinal recess therein, a rocking shaft in said recess, a bell-crank lever fitted to one end of said shaft, studs on the ends of said lever, a pinion fitted concen trically to the end of the cylinder, a gear meshing with said pinion, cams on said' gear for operating said lever to open the grippers, and a spring to close said grippers,

the combination of a bronzing cylinder havsubstantially as described and for the purposes set forth. p

10. Ina bronzing and dusting attachment for printing and lithographing machines the combination of a bronzing cylinder having peripherally disposed means for gripping the edge of a sheet-of paper, rollers.

and brushes for delivering and brushing bronze dust on said paper, a pair of endless chains mounted on sprockets fitted to cross shafts, a pinion on one of said cross shafts meshing with a spur wheel fitted to the cylinder, a driving sprocket fitted to a spindle of said cylinder, paper grippers on said chains and oppositely revolving brushes for dusting .the paper carried by the grippers on the chains, substantially as described and for the purposes set forth.

for attachment to printing and lithographmg machines, the combination of a bronzing cylinder having a longitudinal recess there- 7 in, a rocking shaft in said recess, grippers on said shaft, a lever on one end of said shaft having a long and a short arm, arms of unequal length fitted to a revolving wheel or shaft, studson said arms adapted to contact with and actuate the long and short arms of said lever and a spring acting on the long arm of the lever to keep the grippers tightly closed, substantially as described and for the purposes set forth.

12. In a bronzing and dusting attachment for printing and lithographing machines, endless chains operating on sprockets fitted to a shaft and cylinder, grippers on said chains to take a sheet of paper from a bronzing cylinder, adjustably mounted revolving "brushes arranged on both sides of said machines,

poses set forth. j

15. In a bronzing and dusting apparatus chains, and a reciprocatingly mounted fork for directing the forward end of the paper on to delivery tapes when released from the chain grippers, substantially as described and forthe purposes set forth.

'13. In a bronzing and dusting attachment for printing and lithographing machines, the combination of a bronzing cylinderhaving paper grippers thereon, bronzing rollers and brushes adjacent to said cylinder, endless chains operating at a tangent to said cylinder and having paper gripping devices extending from one chain to another, and revolving brushes arranged in series and operating on both sides of the paper carried by the chains and in an opposite direction thereto, substantially as described and for the purposes herein set forth.

let. In a bronzing and dusting attachment for printing and lithographing machines the combination of a bronzing cylinder having a longitudinal recess therein, a rocking shaft in said recess, grippers on said shaft, a lever fitted to one end of saidshaft and actuated by movable cams, and a spring keeping a constant closing pressure on said grippers, substantially as described and for the purattachable to printing and lithographing the combination of a casing, a

bronzing cylinder having means to grip a sheet of paper, rollers and brushes for delivering and brushing bronze dust on the paper on the cylinder, endless sprocket chains operating in a plane above the bronzing cylinder, oppositely revolving brushes located at opposite sides of said chains, grippers on said chains to grip a sheet of paper delivered from the cylinder, a reciprocable fork to release said latter grippers, a' pivotal lever for actuating said fork, and cams for actuating said lever, substantially as and for the purpose specified.

16. In a bronzing and dusting apparatus attachable to printing and lithographing machines, the combination of a casing, a bronzing cylinder located in one end of said casing, a bronze containing trough adjacent to said cylinder, means for keeping the bronze at an even depth throughout the length ofthe trough, a feed roller having a recessed periphery and operated intermittently in said trough, a continuously revolving distributing roller parallel with and adjacent to said feed roller, revolving brushes bearing against the periphery of said cylinder, a variable throw eccentric on a ournal of the bronzing cylinder, a pivoted arm, a link connecting said eccentric to said arm, a pawl on said arm, and a ratchet fitted to a journal of the feed roller, substantially as and for the purpose set forth.

17. In a bronzing and dusting attachment for printing and lithographing machines, the combination of a bronzing cylinder having a longitudinal recess therein, a rocking shaft in said recess, a bell-crank lever fitted to one end of said shaft, studs on the ends of said lever, a rotatable cam wheel, a pinion gearing with said wheel and fitted concentrically to the end of said cylinder for operating said lever to open the grippers, and a spring to close said grippers, substantially as and for the purpose set forthL' In witness whereof I have signed this specification-in the presence of' two Witnesses.

[CHARLES SOUTTER.

Witnesses:

A. J. CALLIN'AN, I, W. A. AsH'roN. 

